#include <54func.h>
int main(int argc, char *argv[])
{
    printf("You can see me!\n");
    printf("pid = %d\n", getpid());
    char *argArr[] = {
        "./add","3","4",NULL
    };
    execv("add",argArr);
   // execl("add", // add是exe的路径
   //       "./add","3","4", // ./add 是命令参数的一部分
   //       NULL);// 额外补充一个NULL
    printf("You can't see me!\n");
    return 0;
}

